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    <h1>System Configuration : Critical</h1>
    <p>
    One of the following conditions may be present:
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    <li>
      <p>You have set up a GPS mode (PosHold, RTB) to the flight mode switch, and you may have selected "Basic (Complementary)" fusion algorithm.</p>
      <p> Select "GPS Navigation (INS13)" in Config -> Attitude Tab -> Parameters -> Attitude Estimation Algorithm.</p>
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